lyndonkl Skills Library plugin
A Claude Code plugin marketplace with 260+ skills and 85 agents, from thinking and writing to company valuation
- 196 ★ on the repository
- Last commit
Extended access
Why this level
- Agents read and write project files and run external programs such as pandoc when a skill requires it
- Some agents reach out to external data sources such as statements, market data and sports services
Install
- Works in
In your terminal, with SkillFoxx CLI
npx skillfoxx add plugins/lyndonkl-skills-libraryDetects the agents on your machine, shows the access level and pins the version.
Other ways to install
Access and checks
How we reviewExtended accessThe tool runs code or makes network calls and only reads external data.
- Agents read and write project files and run external programs such as pandoc when a skill requires it
- Some agents reach out to external data sources such as statements, market data and sports services
This is third-party code. Review the repository files before installing.
What it does
The lyndonkl/claude repository is a Claude Code plugin marketplace with a library of skills and orchestrating agents. The skills describe methods: thinking and decision frameworks, research, writing, design, data and machine learning, game theory, personal finance. An agent identifies the task and calls the right skills in sequence. Ready agent teams cover specific areas. A set of 15 agents values companies and deals, starting from `valuation-orchestrator`. Other groups run household finances from PDF statements, plan a conference schedule, help with manuscripts and grants, run a forecasting loop, build a narrative from research and write newsletter essays. There are non-business sets too, such as fantasy baseball. The plugin installs with two `/plugin` commands and opens every skill at once. Claude invokes them itself from the description in `SKILL.md`. Two skills lean on external tools: `markdown-to-pdf` on pandoc and LaTeX, `readability-check` on the Python package `textstat`.
Who it is for. Claude Code users who want ready-made methods for decisions, research and writing, and teams that assemble their own agent pipelines from existing ones.
Good fit when
- A three-way choice turns into a criteria review and the agent builds a decision matrix
- A manuscript, grant or recommendation letter goes through editing with a dedicated agent for scientific text
- A company or project valuation is split into stages with a reviewer agent that attacks the finished calculation
- Household finance PDF statements become a briefing and a dashboard with no manual sorting
- A probability forecast is built in five phases with a calibration skill
Not a fit when
- You need one narrow skill for a specific technology: the library covers methods and domains, not stacks
- A money or legal decision rests on a licensed professional's opinion: agent calculations only prepare for it
- A long skill list gets in the way: install only the plugin you need
- You work outside Claude Code: the plugin relies on its `/plugin` mechanism
Example request
Help me choose between three architecture options: review them against criteria and build a decision matrixLimitations
- The license is not set up as a file: the README says the code is open and free to use with Claude Code, and individual skills carry their own attributions.
- The README gives different skill counts in different places (261, 262 and 271), so check the exact number in the repository.
- `markdown-to-pdf` needs pandoc and the `xelatex` LaTeX engine, and `readability-check` needs the Python package `textstat`. Without them those two skills exit with a ready install command while the rest work.
- The last commit dates from August 2026.
How to disable. `/plugin uninstall` removes the installed plugin. For a manual install, delete the copied skill directories from `~/.claude/skills/`.
FAQ
How do I install the lyndonkl skills in Claude Code?
Run `/plugin marketplace add lyndonkl/claude`, then `/plugin install thinking-frameworks-skills`. After that every skill is available at once, and Claude invokes them from trigger phrases in the description.
How does an agent differ from a skill in this library?
A skill is a single method with its own `SKILL.md`, templates and evaluation rubric. An agent orchestrates several skills for a task: for example, `valuation-orchestrator` routes a company valuation to 14 specialists.
Can I install only part of the library?
Yes, the plugin installs in parts, and with a manual install you copy only the skill directories you need from `skills/` into `~/.claude/skills/`. Skills mention each other by name, but each is described separately.
Are extra programs required?
Not for most skills. `markdown-to-pdf` needs pandoc and `xelatex` (on macOS via `brew install pandoc basictex`), and `readability-check` needs `python3 -m pip install --user textstat`.
What happens if I run product-strategist without pandoc?
The agent still produces its main markdown report. Only the final PDF step fails, and the agent shows the install commands. You can render the report to PDF later.
Discussion
No questions or reviews yet.
Related
PluginsA large Claude Code plugin and skill marketplace with the ccpi CLI and a category-based catalog site
11 skills for Claude Code: SKILL.md authoring, prompt tuning, refactoring, change review and planning in files.
A personal Claude Code marketplace with 100+ skills: charts, codebase mapping, video, GitHub work and subagent dispatch.
A plugin with six working skills and a prompt library: routing a task to a prompt, pre-commit checks and skill audits.
A Claude Code plugin marketplace with ready sets of agents, slash commands, hooks and skills, plus a search site
The author's personal Claude Code toolbox: meta-prompt and todo commands, skills to create skills, hooks and MCP servers, auditors and a Ralph loop
Comparison with similar tools
Cards that share the main search query, and how they differ.
| Tool | Official | Repository stars | Main difference |
|---|---|---|---|
| lyndonkl Skills Library (this card) | no | 196 | |
| Claude Skills (Alireza Rezvani) | no | 29,704 | a library by development, marketing and product domains with C-level advisors, while lyndonkl focuses on thinking methods and agent chains |
| PM Skills | no | 27,935 | a marketplace for product managers, while lyndonkl is broader and covers company valuation, writing and finance |
README in short
The page opens with a quick install and an "I want to..." table pointing to the right agent. It then covers a diagram of how agents and skills fit together, agent tables by domain, a skill index by category, installation as a plugin or by hand, example requests and contribution rules.